Biology 3.1.1 Gaseous exchange in insects

Question	Answer
What three problems with gaseous exchange do insects face?	Insects are very active so need lots of oxygen They have a tough exoskeleton so no gaseous exchange can occur There are no oxygen carrying blood pigments
What are spiracles?	Small openings along the thorax and abdomen Image: Cockroach Tracheal System (binary/octet-stream)
How does air enter and leave insects?	Through the spiracles
How does air travel around the insect?	Trachea lead away from the spiracles and these trachea divide into tracheoles.
Why does air have to be transported around the insects rather than in blood?	Insects don't have oxygen carrying pigments in the blood like humans do
How do collapsible air sacs increase the uptake of oxygen?	They act as air reservoirs, increasing the volume of air moving through the xchange system. They usually inflate and deflate bt movements of the abdomen
Where does gaseous exchange take place in insects?	Tracheoles

Resource summary

	Created by Sam Gunnell about 5 years ago